Proof niggers are dumb (IQ, brain size etc)

Oriental populations in East Asia and North America typically have mean IQs falling between 101 to 111. White populations in Europe, South Africa, Australasia, and North America have mean IQs of from 85 to 115, with an overall mean of 100. Black populations living south of the Sahara, in the Caribbean, in Britain, and in North America, average IQs of from 70 to 90.

Especially contentious was Lynn's calculation of a mean IQ of only 70 for Black Africans living south of the Sahara. Many reviewers have expressed skepticism about such a low IQ, holding it impossible that, by European standards, 50 percent of Black Africa is 'mentally retarded'. But a mean African IQ of 70 has been confirmed in three studies since Lynn's review, each of which used Raven's Progressive Matrices, a test regarded as an excellent measure of the non-verbal component of general intelligence and one not bound by culturally specific information.

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Human Race (From the dictionary)
all of the living human inhabitants of the earth; "all the world loves a lover"; "she always used 'humankind' because 'mankind' seemed to slight the women"

Human Species (Homo Sapien) = All humans

Brain mass and volume are different things. Those with a heavier brain, more neurons and more connections, will be able to perform better in whatever areas their brain is more developed in. A larger skull/brain doesn't necessarily mean there are more connections and have a higher intelligence. It also matters where mass is more concentrated inside the brain... more so than it's average weight.

Blacks do not suck at everything. There is a supposed difference in muscle type composition that allows them to have better performance in some physical activities.

The IQ test was formulated using random people and thus represents the IQ of everyone including blacks. More studies are needed that duplicate the results in order to have any standing.

Take some biological psychology, read a dictionary, and gtfo.